DBA_HIST_STREAMS_APPLY_SUM

DBA_HIST_STREAMS_APPLY_SUM displays information about each apply process and its activities. This view contains a snapshot of V$STREAMS_APPLY_COORDINATOR, V$STREAMS_APPLY_READER, and V$STREAMS_APPLY_SERVER. This view is intended for use with Automatic Workload Repository (AWR).

Column

Datatype

NULL

Description

SNAP_ID

NUMBER

NOT NULL

Unique snapshot ID

DBID

NUMBER

NOT NULL

Database ID for the snapshot

INSTANCE_NUMBER

NUMBER

NOT NULL

Instance number for the snapshot

APPLY_NAME

VARCHAR2(30)

NOT NULL

Name of the apply process

STARTUP_TIME

DATE

NOT NULL

Time that the apply process was last started

READER_TOTAL_MESSAGES_DEQUEUED

NUMBER

Total number of messages dequeued since the apply process was last started

READER_LAG

NUMBER

For captured messages, the delay (in seconds) between the creation of the last message and it being received by the apply process. For user enqueued messages, the delay between the message being enqueued in the local database and being received by the apply process.

COORD_TOTAL_RECEIVED

NUMBER

Total number of transactions received by the coordinator process since the apply process was last started

COORD_TOTAL_APPLIED

NUMBER

Total number of transactions applied by the apply process since the apply process was last started

COORD_TOTAL_ROLLBACKS

NUMBER

Number of transactions which were rolled back due to unexpected contention

COORD_TOTAL_WAIT_DEPS

NUMBER

Number of times since the apply process was last started that an apply server waited to apply a logical change record (LCR) in a transaction until another apply server applied a transaction because of a dependency between the transactions

COORD_TOTAL_WAIT_CMTS

NUMBER

Number of times since the apply process was last started that an apply server waited to commit a transaction until another apply server committed a transaction to serialize commits

COORD_LWM_LAG

NUMBER

For captured messages, the delay (in seconds) between the creation of the message corresponding to the low-watermark and it being applied by the apply process. For user enqueued messages, the delay between the message being enqueued in the local database and being applied by the apply process.

SERVER_TOTAL_MESSAGES_APPLIED

NUMBER

Total number of messages applied by all the apply servers since the apply process was last started

SERVER_ELAPSED_DEQUEUE_TIME

NUMBER

Time elapsed (in hundredths of a second) dequeuing messages by all the apply servers since the apply process was last started

SERVER_ELAPSED_APPLY_TIME

NUMBER

Time elapsed (in hundredths of a second) applying messages by all the apply servers since the apply process was last started

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